文献类型：期刊文献

英文题名：Co-pyrolysis of heavy oil and low density polyethylene in the presence of supercritical water: The suppression of coke formation

作者：Tan, Xue-Cai[1];Zhu, Chun-Chun[1];Liu, Qing-Kun[1];Ma, Tian-Yi[2];Yuan, Pei-Qing[1];Cheng, Zhen-Min[1];Yuan, Wei-Kang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：118

起止页码：49

外文期刊名：FUEL PROCESSING TECHNOLOGY

收录：;EI(收录号：20133816761261);WOS:【SCI-EXPANDED(收录号:WOS:000329384200007)】；

基金：This work was supported by the CNPC Innovation Foundation (2011D-5006-0406) and by the State Key Laboratory of Chemical Engineering.

语种：英文

外文关键词：Coking; Co-pyrolysis; Heavy oil; Polyethylene; Supercritical water

摘要：At 693 K and water density of 0.30 g/cm(3), the co-pyrolysis of heavy oil and low density polyethylene (LDPE) in the presence of supercritical water (SCW) was investigated with the emphasis on the coking mechanism involved. The co-pyrolysis in SCW was found to have the significant advantages of the decreasing yield of coke and the increasing yield of aromatics over the pyrolysis of heavy oil alone in SCW. With the increase in the loading of LDPE, the suppression of condensation in co-pyrolysis is gradually intensified, suggesting the essential role of LDPE as an external H-source in co-pyrolysis. Only in the continuous SCW phase can the H-donation between the pyrolysis networks of heavy oil and LDPE be effectively accomplished, by which the condensation of light oil fractions to heavy oil fractions and the deep condensation of asphaltenes to coke are partly suppressed. (C) 2013 Elsevier B.V. All rights reserved.